Teased about things, and cant change style right!!!! I need help!!!!

Ok so at first I didnt like things like knee high Converse and skinny jeans.I was really girlie, but now i own a pair of knee high Converse and skinny jeans. I have burnette hair, and i wanna die it red and black. I am starting to be really emo, goth, and punk. i dont know how to change my style all the sudden, but thats what i really want. also ive been teased alot about having a big butt. how do i change my style, and wear what i like with out being teased???